Right now
The most recent data we hold from NOAA arrived 5 minutes ago, and this point is not in it. We record detections, not passes: an absence is not proof that nothing is there.
Nothing else has been detected within 20 km in the last 24 hours.
This alert expired on 12 September 2026 at 22:00 UTC. It is kept here as a record.
It is the 20th strongest of the 190 detections recorded within 20 km of this point since 10 March 2026. Another comparable one was recorded here earlier the same day. 7 more were recorded here in the fortnight before it.
What the source measured
NOAA reported: Severe Thunderstorm Warning issued September 12 at 4:46PM CDT until September 12 at 5:00PM CDT by NWS Norman OK
Urban PEI: 1,135,887 within a heuristic 50 km radius; not unique people.
Nearby, since 10 March 2026
- September 12, 2026 · score 58 · 0.0 km
- March 11, 2026 · score 76 · 1.8 km
- August 7, 2026 · score 52 · 6.1 km
How we know
3 recorded sources include NOAA; independence is not established by this count.
Our own score for this event is 58 out of 100.
This is our versioned heuristic index, not source severity or a calibrated probability. Urban PEI does not count unique people.
Computed under scoring rules v4. Rows carrying other versions were judged by different rules and are not directly comparable.
Event Data
| Type | Severe Weather |
| Severity | High |
| Calamity Score (ours) | 58 / 100 |
| Legacy data-support index | 0.90/1 |
| Coordinates | 35.4875, -97.3075 |
| Nearest City | Midwest City (9 km) |
| Urban exposure index (PEI) | 1.1M within 50 km |
| Impact Tier | severe |
| Timestamp | 2026-09-12T21:46:00.000Z |
| Source | https://api.weather.gov/alerts/urn%3Aoid%3A2.49.0.1.840.0.ec36134182e3b02532ae5ee1842eeeab5843b317.002.1 |
Physical priority index · v4 (historical). Heuristic priority, not calibrated probability, predictive accuracy or damage. The legacy data-support index combines assigned source support and field availability. Urban PEI is distance-weighted and does not count unique people; zero does not establish that nobody is present. Model cards.
Source and revision timeline
Source: noaa. Occurrence: 2026-09-12T21:46:00.000Z.
First archived: 2026-09-12T21:48:51.893Z. Material modification: not recorded.
Retained revisions are prospective; earlier versions may be unavailable. No revision entry does not prove that a record never changed.
Score Breakdown
Technical Details
| Event | Severe Thunderstorm Warning |
| Urgency | Immediate |
| Certainty | Observed |
| AreaDesc | Pottawatomie, OK; Kingfisher, OK |
| Headline | Severe Thunderstorm Warning issued September 12 at 4:46PM CDT until September 12 at 5:00PM CDT by NWS Norman OK |
| Expires | 2026-09-12T17:00:00-05:00 |
| SenderName | NWS Norman OK |
| HasExactCoords | true |
| MergedCount | 2 |
| MergedIds | ["noaa_urn:oid:2.49.0.1.840.0.ec36134182e3b02532ae5ee1842eeeab5843b317.002.1","noaa_urn:oid:2.49.0.1.840.0.aad3bfdbc2881d541ff1c292950a90ee37324d5c.001.1"] |
| Spc ReportType | hail |
| Spc Speed | 100 |
| Spc Location | 1 NNW Oklahoma City |
| Spc County | Oklahoma |
| Spc State | OK |
| Spc Comments | (OUN) |
| Iem TypeSummary | H |
| Iem Magnitude | 1 |
| Iem Unit | Inch |
| Iem City | 1 NNW Oklahoma City |
Safety Information
Always follow official guidance from your local emergency management agency. This platform provides scientific monitoring data and is not a substitute for official warnings. If you are in immediate danger, contact your local emergency number.
Series begins 8 March 2026. Comparisons refer to that period only. Collection gap: 14-26 August 2026.
This data is aggregated algorithmically from scientific sources. Not a replacement for official emergency warnings.
Review the area, threshold and delivery channel in your account.
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